I suspect that I might have contributed to the problem myself by downloading a risky piece of software. I was trying to find a crack for a piece of software I wanted to try. I was asked for permission by kaspersky and I let it in. Vista also queried the software but I let it run. I have since that time bought the software in question. It has been a valuable lesson for me.
I have been involved in the IT profession for more than 20 years and this is my first encounter with a virus. Maybe I have been lucky. It has been an interesting, although lengthy, exercise and I will take a little more care with security in the future.
Thank you for your support over the last few days drongo.
Regards,
Bob Frost (from Adelaide, South Australia)